Blowpipe.



J. ASLIN.

BLOWPIPE.

APPLICATgoN FILED rE.15.19u.

1,227,104. Patented May 22, 1917.

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` j JAMESlAsLnvgoF'rnovrnni'cng'RHODE isLaNi).

BLowrIrE.V

To all, ir/02pm t1-may concern.'

Be it'kn'own-that I, dairies of the United States, residingfatprovidence, in the county of Y Providence? and" State of Rhode Island, haveinvented alnewv and use# ful Improvement, iny Blowpipes, of; whichy the following is aspecification. I Q

This invention relatesto certain new and usefulv improvements in blow pipes,.`a'nd the G' primary obj ect of the invention is to kprovide a blow `pipe which is equipped with means for shutting off the supplyof air andgasby a mere change inthe positiony of the blow pipe, and more specifically 'to shut .offV the flowby tilting the blow. pipe from a hoiizontal or downwardly directed position, yto an upwardly directedposition.,4 A l The invention in brief resides in the pr'ol vision of gravity controlled yvalves ,whichv J when held yhorizontal vor directeddownwardly beyond the horizontal willv beheld open and which willautomatically respond to the action of gravity upon beingdirected above thel horizontal, .to thereby automatically effect closure of thefvalves.

Further, the invention aims lto generally simplify and economize in the cost of production of devices of this type, and to eliminate parts, to thus decrease the complexity and simplify the operation'.

In thedrawings-.U f Figure 1 is a longitudinal of the invention. f

Fig. 2 is afragnientary like view, showing sectional view i the'valves closed as distinguished from the open position shown kin Fig. 1.j

Fig. 3 isa detail view of a modified form of valveseat.

Fig. L is a similar view yof afurther modif edform of valve seat'andv gas or air supply pipe connection. Figy is anendviewof Fig. 4:.

In proceeding in accordance with thepresent invention, a pair of pipes 1 and 2 are eni- 'i ployed and 'disposed in parallelism, 'and connected'in anyA suitable manner as indicated at 3, so `as tobe maintainedintheir said-relation.l The-pipe 1' is the gas pipe yand theV pipe 2 the airpipe,'the former having a'dis-r charge tube, or ynozzle y'secured thereto and extending out at an angle,while the air pipe has a similar tube or nozzle 1, which` snrrounds the nozzle f5 in spaced relationtheretdlfk p K .p s y Secured over theinner vends ofthe pipes 1 andk 2 are similar sleeves 6, and since same AsLiN, a citizenVY speciscatirn of Lettersrafent. Patented May 22, 1291-7. i Applicationgfled February 15, 1917. Serial No. 148,768. v

are identical ink structure, a description of onewill suflicefor the other. Each sleeve is 4open at its inner end and is slipped over the pipes 1 or 2 and secured thereto by solder at 9. ,Y r1 he sleeves have closed .outer` ends effected'by the provision of walls 7 ,the latter being centrallyperforated at 8, and received over the sleeves are rubber pipes ortubes 10 and 11which lead to the respective gas and air sources of supply.

Freely mounted in the pipes liand 2 yare .the gravity .valves 12 and 13 respectively,

each preferably in theform of a-solid rod,

pointed at 14 and 15, to form valvesi The rods arefmadesolid so asto possess weight and thus to more readily and fquiclrly respend to the actionof gravity, and since the valves 14 and 15 are of cone-like formation, it will beapparentthat upon their encounteringtthe vperforation the rods will bef centered by the walls `defining such perforations and'thus r'mlyand uniformly seated to close the perforations.

Rodl is of less length than; 12, though this isnot essential or necessary, and is`preferably stopped4 during its outward movement by the provisionof aA suitable stop 15,

here shown'in theforin kof a teat punched lply pipe 10 or 11, while in Figs. aand 5, the

sleeve 6 isfequipped with a wire loop 21,

. the latter assisting in threading the rubber tubes 10 or 11 over the sleeve, and also to protect the wall 7 From the Vforegoing it will be apparent that when the device is heldV in the position ,of Fig. V1,or with the pipes 1-2 below the horizontal at lthe outer ends thereof, thek valves will remain open or unseated, though permitting of a circular movement of the nozzlesV vfor any -desired purpose without closing, but as soon as the pipes 1 and 2 are tilted o utofthe horizontal thevalves willinstantly gravitate to closed position, shutting o the air and gas at one and the same time.

It will be. further apparent that byslippingoi the rubber tubes and 11, the valve 'Y seats may be cleaned with a pin or the like,

since they appear at the endsof the pipes 1 and 2 and hence are readily accessible for the purpose just mentioned.

The inner end of the nozzle 5 projects into its tube 1 and thus serves as a stop for the valve rod 12.

VHaving thus described my invention, what I claim as new and desire to secure by Letters Patent is- Y l. In a blow pipe,v a pair of parallel pipes, a nozzle secured to one pipe and projecting into the interior thereof to form a stop, a nozzle secured to the other pipe and surrounding the first nozzle in spaced relation thereto, sleeves on the innerends of the pipes having transverse walls centrally perforated, and adapted for connection with supply pipes, valve rods sliding'in the pipes and each having a cone pointed end for engagement in said wall perforations, one ot' the valves being engageable with said stop on said pipe to limit the extent of the sliding thereof and the other pipe having astop to engage its rod to limit sliding of `the latter.

2. In combination with an air pipe and a gas pipe connected thereto, nozzles connected to the respective pipes, slidable rods in the pipes having cone-valve ends, end walls formed with perforations to receive said valve ends, and tubes secured over the pipes adjacent said end walls so as to permit access to the perforations thereof upon removal of the tubes. Y j 3. In a blow pipe, air and gas pipes having discharge nozzles, a valve seat in each pipe, stopsv between the nozzles and valve seats, and relatively long heavy rods slidable in said pipes and having valves formed on one end to engage injsaid valve seats and having their opposite ends engageable with said stops.

fi. In a blow pipe, an air pipe having a nozzle,Y a gas pipe arranged substantially parallel'to the air pipe and connected theretojand having a nozzle extending across the space between the pipes and through the air pipe nozzle and connected to the air pipe, and independent gravity valves in the respective pipes for simultaneously controlling vthe supply of air and gas thereto.

5. In a blowpipe, an air pipe having a nozzle, a gas pipe arranged alongside of the air pipe, telescoping nozzles borne by the respective pipes, and independent gravity valves in the respective pipes for simultaneously controlling the supply of air and gas thereto.

6. In a blow pipe, air and gas pipes havin g discharge nozzles, and gravity controlled relatively long and heavy single rods slidable in said respective pipes having valves formed on one end for simultaneously controlling the supply of air and gas thereto.

7. In a blow pipe, air and gas pipes, and a gravity controlled relatively long and heavy single rod in the gas pipe having a valve formed on one end for controlling the supply of gas thereto.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES ASLIN. Witnesses ADA E. HAGERTY, J. A. MILLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, Il. C. 

